Furnace-door opener and closer.



`T.,E. SMYTHE. 11111111101: noon OPENER 11m LosEIL APPLICATION IILIID DBO. 23, 1909. 1 l 1,002,088. Patented Augzs', 1911.

3 sHnnrHnn'T 2.

1T. E. SMY'IHE. FURNAOE DOOR OPENER' AND CLOSER. APPLIGATION rILnD 11110.23, 1909.

LGOQQOBS.` y `imma Aug.29,1911.

UNITED sTATnsrATENT OFFICE.

THOMAS E. S'MYTHE, or

BELLEFONTAINE, GHIO.

FURNACE-DOR OPENER .AND CLOSER.

To all 'whom 'it' may concern:

Be ,it known thatI, THOMAS E. Sarria-in, a Vcitizen of the United States,. residing at lfellefon'taine, in the county of Buchanan and Sta-teef Ohio, have invented a, new' and useful Improvement in Furnace-Door `Openers aii'd Closers, of which the folloiv ingr isa specification This invention relates to certain new and useful improvements in ,door openers and closers, the object being1r to. provide mcclia, nisni for opening and closing doors of steam' boilers usedin connection with locomotives, whereby sai'd doors can be readily opened and iclosed by simply operating `a foot.- leve'r.

Vfurther object of my invention is to provide a f urnace'door formed ot two sections which are carried by leversm such a manner that the door sections will be swung open and closed when the levers vare 'rocked 'in such a manner that all danger ofthe door sections binding in any way isfprevented.

A.' further object of .the invention is to provide adoor formed of tvvo sections, each sectionbeing carried by a air of levers which are operated by Va sli ably mounted member controlled vby a piston in such a manner `that when air or steam is' admitted in4 one endfoftI-he cylinder in which the pis- Aton is mounted the doors will be swung into a closed ,position and .when admitted in the opposite en'd of the cylinder the door sections will be swung apart into an openposition.

A stillfnrther object of my invention is to rovide a novel form otleversfor con tro ling the valve' for admitting .steam into the cylinder 4whereby 4said valve would be .moved so,as to admit steam into either end of thecylinde'r by siniplyzipressing slightly ontoiie ofthe levers.

Still another object of the invention is to' prowide means for adjustingthe exhaust port of thev cylinder' whereby the slammii'ig ofthe-.doors when forced' together preveii'ted,`.`as by regulating thesize ofthe 'opening anair cushion4 can be formed soA that [the doorsyvill close m .such 'a' manner that all dangerlof the doors becoming iiijiired'in s-nywayis prevented.

stillx-'f-urther nlnect o ffmy invention is tofbprovide, a door. wliiohis soconstructedA Specification of Letters Patent.

Applicationfiled December 23, 1909.

that the saine can be Patented Aug. 29, 41911. sei-iai No. 534,601.

linvention consists in the novel features of construction7 arrangement and combination yof parte, all of which will be hereinafter fully described and pointed out in the claims.l

In the drawings forming apart of thisA specification: Figure 1 is aside elevation fof n iy im ln'oved furnace door partly in section. g2 is a horizontal section taken on the line 2-2 of Fig'. 1. Fig. 3 is a vertical'sectionftaken on the line 3--3 of Fig."

l.. Figa-4 is a Vdetail vertical section showing the manner of mounting the foot levers for controlling the valve. Fig'. 5 is a. per

spectiveview of the sliding operating block detached. Fig. 6 is a detail vert-ical section taken on the. line G-6 of Fig. 1. Fig.

7 is adetail section through the steam chestof the cylinder showing the manner of ulati'ng the size of the exliaiist in order to form a cushion for the piston. -Fig 8 isa side elevation of aV modified form `of door,

and Fig 9 is a det-ail' view ofthe-same showingv the manner of mounting the stop blocks for limiting the movement of the lever arms. '1 'f lIn carrying out my improved invention,

II employ a. door frame proper A which is constructed the same as -an ordinary door used on furnaces and is provided with apertured hinge lugs A which are adapted to co-aot with tliehinge lugs of the furnace so that-:by detaching the door now in use on a furnace my improveddoor can be 4readily placed in position thereon. The other'tend of the frame A is provided with the usual latch "member A which is adapted to eoact with the catch carried by theV furnace inl a similar manner to doors oflthis character now in use. The frame Ais' provided-With Arwhieh communicates with `t e in iorfoiM tthe-,iurn-ece and said [rib has .forxpedi teral therewith a rectangular plate A w ich is also provided withl an opening registering with the opening `A and had an annular flange A at its edge. The annular'l rib A of the frame A is provided with webportions AT for strengthening the sameand 1t will be seen that the frame A is cast in-- tegral with the plate 'A5 in such a manner two fhollow sections F", F2 which are provided with internal ribs so as to form air spaces between the wallsof the door sections in vorder to allow free ventilation and the lower edgeof the upper section F is provided with 'a V-shaped groove F3- and the upper edgeof the section F 2 is provided with a' V-shaped tongue F4 adapted to fit within the groove F3 when the door sections are brought together so as to form an ``exceedingly vtight 'joint and it will .heseen that/byifor'ming the lower-section with a V- 'shaped tongue tlie='dirt and dust. or small particles ,of coal .which drop on the saine when the furnace is being fired will vslide off. Connected-to the side bar of the plate A5 carrying the levers is a casting G which is provided with-apertured lug portionsA G 'for securing theysame thereto and said casting Gr comprises'a cylinder portion GF and .40. a'housing'portion G3: inl which Slidably nlouiited :1n-'operating block l-l the forward moveinfcnt of which is limited by the lug A* and 'th-e''r'eg ward. nir-)vement ofv the s'a-lnc is j limited by-'bolts-'I carried thercby'whieh are I locked in'adjiistedjposition-by lock nuts'and.

which arev pivotally mount said l'piston rodl( 'carries amp'fifston head ht",

ting levers'lf; and() are proheads M, N of operating links M and N which are provided with cylindrical head 'portions 1P, N2 at their opposite ends which are seated in cylindrical sockets H formed in the operating block H so that when the block H is moved forwardly by the piston the operating levers B and ontheir pivots so as t0 swing the door sec tions apart, said sections being guided by the links D and E so that the strain on thc levers B and C is reduced. It will be seen tha-t as the block is moved forwardl the heads of the operating links M and hiwill move slightl in the cylindrical sockets of the head an levers in such a manner that the operating levers can move apart order to carry the door sections apart and when the block H is drawn rearwardly the operating links will draw the levers together so as' to carr the door ysections together in order to c ose the door. For holding the sect-ions in an open position so that'all danger of the door sect-ions closing'when a boiler maker has entered the furnace to repair the same I. provide the opposite side flange with C will be swung a pivoted catch 'O provided with a V-shaped tongue-portion 0 adapted vto fit Within the V-shaped groove 0f the upper section F of the door and it will be seen that by pressing on theouter end ofthe catch O so as to allow:

thedoor .sections to pass under the same and Athen swinging the same back into its. normal position the doors will be held in such a4 manner Athat it will be impossible for the.

doors to be accidentally closed.

Formed integral with the cylinder@2 is l a steainchest I whlch is provided with ports l. l2 communicating respectively with' the ends of the cylinder Gr'-I vthrough which stezun is adapted to pass and betexl'mu'sted 'for ino v1 ng the vpiston in the cylinder. 'lhestcaln .chest l has a cylindrical valve Q n'iounted therein which exi ends througlistullinghoxes atits ends for forinlng a tight/Joint and sanlx'alve Q is-providcd with annular grooves Q, Q2 'forr'ning exhaust lmssages which are adapted to.register-with the passages l, l." 'so as to allow the 'efxlnulstsleain to I mssoul of the cylinder, said exhaust 'passages eoin- Lnuuieailllll with outletslt and It', lhe outlet lt being closet-l by a needle 'valve l2 .so 'that the size o'l. lh'e ')ullel' can he re; 'ulaled in- -oriler that :in air cushion can he l'orun-.d'in

the e|1d`3olilhe cylinder so that when steam I is admitted in the opposite end so aste drive the piston iwlrwardly by regulating` (he size -oli he'openi-ngthe exhaust ran lne'eonlrolled nso that the movement-of the pistou will-.he regulated in-orderlo preveniflhedoors from dwing slan'nni-,d toge'l'lier land being injured. (oinuu|nir.aling with .the ste-:uu chest l. iwan' inlet pori' l"'"lo wllieha Strain' or nir supply pipe H isadaptedto beconumztetl, said inlet nilo y 5 `and eonuecied ich, kby e" b1 gg Vf d einen ding from 'an of Ibhe flange of. theo -u'utegwl with the Hooge y fm, bmilsl1 W ontwnrdly and bet-owen Wbell 'ilo'f foot loi/Tebe X andfl fled, Wi'h opposa.,

T-sbnped member U helped meddle on its leve).- T i, roug'lx 'ie valve Q. 'The umgnmd of two s( i tbe other level? u; led by 4 :md 1g;

u ed i beve.-

' elmo; l

so which extends to d ly bww "io eo-not Wlththe Close` mld by movlrl .ing tbe,

desired to remove :my of .the paris5 ,lfys only neoesaryf to det-a J1 the plato. The meting Gais Supported by n bolt-Z2- so to prove. y1t tbe Sam'xe fr m l'novngfin "orgy direction when the doors` :we openlied 11d 7o isad bolt` has on bf. its ends sfimtel'l, in Uo tbl aded bose: formed in a' lug seem-edr in of the' o 'Bilder Gm'd ha its other? ys A i'e'fiuied` bore forl'rxedy`11i n' lug o'z'lrled by tbe latch ,end of tjlofrzu'ne A., 75 Suid. boltI bengeeured nits rfxdjlvlsled po-y siton .bydlsoid nuts so that theszmaeomn readily tightened, und it will be 'eebtl v by Connootllg the enstilng'fto ythe 'f1 .noch tl'lehonmimer' blown. all dm'ger of the; Working loose ipre'vented. 1

Inwthe n'lodj olxion shown' y o "F1 gs.

Holm' flange on `W1', f' eh are pivotl'ly n'lou'utod d opex'ting levers 3 which Carry door sections 4 and. 5 at tber'froe ends, Suid lovers b'lsixlggy connected togetl'lel"y by eross l-,n' y `Deleted to one of' the 'operating fers'f link fw'uoqvb: ,h isroonnected "a p stoxi-r v of u, pistou n'lonted. Within a cylinder FE1' and, Connected-bytheplate Qby :my suitole be that as. tbe operatinglevel'sgswung 16.5@

' 4 so as to protect 4the same from coal dust i 'sections carried by the free ends of said le vers, guide links connected to said door sections above and below said operating levers,

links carried by said operating levers and a fluid operated slidably mounted block con` nected to said 'last mentioned links. v

42. The combination with a pivotally mounted frame having an integral aperitured plate provided with a flanged edge, of levers mounted on one of the side flanges of saidfplate, door sections pivotally carried by the free ends of 4said levers, a slidabl 4mounted operating block provided witi sockets, links pivotally mounted iii said sockets connected to said levers and a fluid operated piston connected to` said operating block.` f i 3. A door opener and closer comprising a frame havingmn integral apertured plate provided with a flanged edge, of operating levers mounted on the flange of said plate provided with sockets, by the free ends of said'operatinglevers, a slidably mounted block provided with sock-V ets, links provided with heads mounted in the sockets of said block and said levers,'

means for adjusting the movement of said block, together with means for reciprocating the same. l

4. 'A .door opener and closer comprising a fi-aine hav'inghinge lugs adapted to be n'ionnted on'the hinged lugs of a furnace, said frame henig provided withr an integral apertured plate having a flanged edge, a

` casting secured to one sideV flange of said plate provided with a housing and-a cylinder, lei-'ers pivota-llyinounted on said flange, door sections carried by said levers, a block slidably mounted in said housing, links co'nnecting said block to said operating levers, a

piston mounted in said cylinder connected to said block and means for admitting fluid into' the opposite ends of said cylinder for operating said piston.

5. A door opener and closer comprising a traine having an integral apertured plate provided with a flanged edge, said plate bef ing pil-ovided wit-li an opening communicating with the opening of the frame, a door foi-ined of two sections mounted onA said plate between said flanges and adapted to vclose said opening, operating'leveis pivot-v ally mounted on said frame having their free ends connected to said door sections, a'

connected to -saidl operatin 'connected to said operating .limit-ing the movement of block and a valve for controlling the flow oi" door sections carried levers, a, plate for coif'ering 'nient of Said operating slidably mounted block, links connecting said block to said operating levers, a cylinder carryinga piston ha'ving a-piston rod block, a valve for controlling the flow o fluid into said (cylinder and a pair of foot levers for operating said valve.

6. A door opener and closer comprising a frame having an integral apertured plate provided with an annular flange, operating levers mounted on said flange, door sections connected to the free ends of said operating levers, guiding links mounted above and below said operating levers having their free ends connected to said door sections, an operating block, links carried by said block levers, a piston block, means for said operating conn ected to said operating fluid into ,said cylinder, said valve being controlled by a pair of foot levers through the medium. of links .and levers.

7. In a door opener and closer the combination with a frame, having hinge lugs connecting the same to the hinge lugs of a furnace, said frame being provided with an integral apertured plate having an annular flange, levers pivotally mounted on one of the side flan 'es ofsaid plate, door sections carried by'said levers, a casting connected to said plate having a cylinder portion and a housing, an operating block mounted in the housing, links connecting said operating block to said levers, a piston mounted in said cylinder having a piston rod connected to said operating block, a steam chest formed integral with said cylinder, a valve mounted Within said steam chest and a pair Aof levers for operating said valve through the medium of links and levers.

' 8; A door opener and closer comprising a frame having means for securing the saine to a furnace, said frame being provided with` -an integral apertured plate -having an opening, a pair of door sections for closing said opening, pivotally -inounted levers having their free ends connected'to said door sections, guide links connected to said door sec-` tions, a, lionsiiif connected to said plate, a block Vslidably mounted 'in said housing, links connecting said block to said operating said housing and levers and a [luid operated piston connected to said operating block.

9. In a door opener and closer, the combi'- nation with a frame, of' an apertured plate carried by the fiaiiie, a pair of operating 1e-` vers mountedoii said plate, door sections carried by said levers, pivoted guide links connected to said doorscetions, an operating block, links connecting said block to the operating leveys, 'means for limiting the niovcblock, a fluid operated piston connected to said operating iso block, a. velvefor controlling the of "above vand'belwthe"operatingy level-sfreuid to said piston, and feet levers for conltrolling the movement ofsznid valve.

10. In a device ofthe kind desc'bed,

5 frame adapted, to be secured to the hinge lugs of a furnace, an apertured platecarrie by seid frame, operating levers mounted lon said plate, door sections carried by the free end portions of seid levers, guide links con? 10 neeted to the door sections and te vthe plate K l spectvively, 'Operating links connected td sx1-id levers, and fluideetimted means cafriecl by the plete adapted to actuele seid'lastfx'n'entioned links.`

THMAS SMYTHE.'

Witnesses: i

E. B MGBATIL CHASQE. BR C11;. y 

